"""
Strategy API routes
"""

from fastapi import APIRouter, HTTPException, Query
from typing import Dict, Optional
import asyncio

from app.services.strategy_engine import strategy_engine

router = APIRouter()


@router.get("/generate/{symbol}")
async def generate_strategy(
    symbol: str,
    timeframe: str = Query(default="4h", description="Timeframe for analysis"),
    portfolio_value: float = Query(default=10000, gt=0, description="Portfolio value in USD"),
    risk_tolerance: str = Query(default="medium", regex="^(low|medium|high)$")
):
    """Generate trading strategy for symbol"""
    try:
        strategy = await strategy_engine.generate_trading_strategy(
            symbol=symbol,
            timeframe=timeframe,
            portfolio_value=portfolio_value,
            risk_tolerance=risk_tolerance
        )
        
        return strategy
        
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.post("/validate")
async def validate_strategy(strategy: Dict):
    """Validate strategy parameters"""
    # Implementation for strategy validation
    return {"valid": True, "message": "Strategy parameters are valid"}


@router.get("/backtest/{symbol}")
async def backtest_strategy(
    symbol: str,
    timeframe: str = Query(default="4h", description="Timeframe for backtest"),
    start_date: str = Query(default="2024-01-01", description="Start date (YYYY-MM-DD)"),
    end_date: str = Query(default="2024-12-31", description="End date (YYYY-MM-DD)"),
    initial_capital: float = Query(default=10000, gt=0, description="Initial capital")
):
    """Backtest strategy on historical data"""
    try:
        results = strategy_engine.backtest_strategy(
            symbol=symbol,
            timeframe=timeframe,
            start_date=start_date,
            end_date=end_date,
            initial_capital=initial_capital
        )
        
        return results
        
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/risk-parameters")
async def get_risk_parameters():
    """Get default risk management parameters"""
    return {
        "max_position_size": 0.1,
        "max_daily_loss": 0.05,
        "risk_reward_ratio": 2.5,
        "max_open_positions": 5,
        "stop_loss_atr_multiplier": 2.0,
        "take_profit_ratio": 2.5
    }


@router.post("/optimize")
async def optimize_strategy(
    symbol: str,
    timeframe: str = Query(default="4h"),
    optimization_params: Optional[Dict] = None
):
    """Optimize strategy parameters"""
    # Placeholder for strategy optimization
    return {
        "symbol": symbol,
        "timeframe": timeframe,
        "optimized_params": {
            "stop_loss_multiplier": 1.8,
            "take_profit_ratio": 2.2,
            "rsi_period": 12,
            "volume_threshold": 1.5
        },
        "performance": {
            "sharpe_ratio": 1.45,
            "max_drawdown": 7.2,
            "win_rate": 0.68
        }
    }
